Basic kit for your 31 spline 8.8 Rear Axle swap, more items could be added but this is the bare minimum, You will receive 1 pair of our 3/8" thick A50 Steel U-Bolt plates with 3 pin mounting options, a pair of our 8.8 Spring Perches with the same pin option to match, & 4 - 10" x 5/8" x 3 1/4" U-Bolts with 1/4" laser cut washers and nuts, and a pair of Shock Brackets. This will get your new Axle under the rig. Made in the USA.